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Analyse d'admixture×Théorie coalescente×Balayage sélectif (D de Tajima)×
DomaineGénétiqueGénétiqueGénétique
FamilleProcess / pipelineProcess / pipelineProcess / pipeline
Année d'origine200919821989
Auteur d'origineDavid Alexander & Jonathan NovembreJohn KingmanFumio Tajima
TypeClustering and inference methodStochastic process modelNeutrality test
Source fondatriceAlexander, D. H., Novembre, J., & Lange, K. (2009). Fast model-based estimation of ancestry in unrelated individuals. Genome Research, 19(9), 1655–1664. DOI ↗Kingman, J. F. C. (1982). The coalescent. Stochastic Processes and their Applications, 13(3), 235–248. DOI ↗Tajima, F. (1989). Statistical method for testing the neutral mutation hypothesis by DNA polymorphism. Genetics, 123(3), 585–595. DOI ↗
AliasPopulation structure inference, Ancestry analysis, ADMIXTUREKingman Coalescent, n-coalescentTajima's D test, Selective sweep analysis, Neutrality test
Apparentées444
RésuméAdmixture analysis is a population genetics method that infers population structure and individual ancestry from multilocus genotype data. Originally developed by Pritchard, Stephens, and Donnelly (2000) and refined by Alexander, Novembre, and Lange (2009), admixture analysis reveals how genetic variation is distributed among populations and estimates the ancestry fractions of admixed individuals. This technique is essential for understanding human evolutionary history, detecting population stratification in genetic studies, and inferring individual ancestry.Coalescent theory is a probabilistic framework that traces the genealogical history of DNA sequences backward in time to their most recent common ancestor. Developed by John Kingman in 1982, this method forms the foundation of modern population genetics, enabling researchers to understand demographic events, estimate genetic parameters, and reconstruct evolutionary histories from modern genetic data.Tajima's D is a statistical test designed to detect selective sweeps—recent, rapid fixation of advantageous mutations—from patterns of genetic variation in DNA sequences. Developed by Fumio Tajima in 1989, this test measures deviations from neutrality by comparing different measures of DNA sequence diversity. A significant Tajima's D value indicates departure from neutral evolution, suggesting positive selection, population structure, or demographic events.
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ScholarGateComparer des méthodes: Admixture Analysis · Coalescent Theory · Selection Sweep (Tajima's D). Consulté le 2026-06-19 sur https://scholargate.app/fr/compare